Printing graphics problem

Hi,I have a problem with printing graphics in MM_TWIPS mapping mode - all grapgics (lines, arcs) are wery weak and setting the Pen to different width or color or modes has no effect. If I change the mapping mode to anything else (example MM_LOMETRIC) it prints OK with the same Pen settings. It is only graphics that are weak, text is printed OK. Thank you for any help,mateC.Oh, I forgot, I use Builder 6, running in OS Vista, but I do not think this is a problem.